Model: FXU-LC52 SERIES
LVDS
5 x 3.2mm 2.5V Oscillator
Features
ULTRA Low Jitter
Low Cost
X
PRESS
Delivery
Frequency Resolution to six decimal places
Stabilities to ± 20 PPM
-20 to +70°C or -40 to +85°C operating temperatures
Tri-State Enable / Disable Feature
Industry Standard Package, Footprint & Pin-Out
Fully RoHS compliant
Gold over Nickel Termination Finish
Serial ID with Comprehensive Traceability
V
DD
Enable / Disable
Freq: 0.016 MHz to 1.35 GHz
Rev. 07/08/2015
Applications
ANY application requiring a high
performance LVDS oscillator
SONET
Ethernet
Storage Area Network
Broadband Access
Microprocessors / DSP / FPGA
Industrial Controllers
Test and Measurement Equipment
X
PRESS
O
ASICs
GND
FOX
OUTPUT
For more information -- Click on the drawing
Contents
page
Description
The Fox X
PRESS
O-ULTRA Crystal Oscillator is a
breakthrough in configurable Frequency Control
Solutions. X
PRESS
O-ULTRA utilizes a family of
proprietary ASICs, designed and developed by Fox,
with a key focus on noise reduction technologies.
The 4
th
order Delta Sigma Modulator reduces noise to
the levels that are comparable to traditional Bulk
Quartz and SAW oscillators. The ASICs family has
the ability to select the output type and supply
voltage.
With the X
PRESS
O-ULTRA lead-time, low cost, low
noise, wide frequency range, excellent ambient
performance, X
PRESS
O-ULTRA is an excellent choice
over the conventional technologies.
Finished X
PRESS
O-ULTRA parts are 100% final
tested.
Model Selection & Part Number Guide
2
Electrical Characteristic
3
Absolute Maximums
3
Output Wave Characteristics
4
Phase Noise
5
Jitter
5
Pin Assignment
6
Recommended Circuit
6
6
Reflow
Mechanical Drawing and Pad Layout
7
Tape and Reel Specification
8
Label
8
Traceability – LOT Number & Serial Identification 9
Mechanical Test
10
11
Other X
PRESS
O Series Links
Fox Contact Information
11
Page 1 of 11
Fox Electronics 5570 Enterprise Parkway Fort Myers, Florida 33905 USA +1.239.693.0099 FAX +1.239.693.1554
An Integrated Device Technology, Inc. company
FOXonline.com
FXU-LC52 Series
Model Selection Guide & Fox Part Number
STEP #1:
Customer selects the Model Description and provides to Fox Customer Service
Model Description
FXU – L C 5 2 5 R – 156.25
Frequency (in MHz)
Resolutions to 6 places
past the decimal point
L
=
LVDS
C
= Ceramic
M =
LVDS
(pin 2 E/D)
5
=
5 x 3.2mm
2
= 2.5 V
blank
= -20°C to +70°C
0
=
± 100 PPM
R
= -40°C to +85°C
5
= ± 50 PPM
6 = ±25 PPM
8 = ±20 PPM
(-20°C to +70°C)
STEP #2:
The Fox Customer Service team provides a customer specific Part Number
for use on their Bill Of Materials (BOM).
Fox Part Number
(The assigned Fox Part Number must be on the BOM – not the above Model Description)
(This will ensure receipt of the proper part)
854A – 156.25 – 3
The 1
st
Field
Product Code #
854A = FXU–LC52
854D = FXU-MC52
The 3
rd
Field
Fox Internally Generated Number
The 2
nd
Field
The Customer’s Frequency
(If any specification changes,
the last digits change)
(The same specs for a different customer
also changes the last digits)
This example,
FXU-LC525R-156.25
= LVDS Output, Ceramic, 5 x 3.2mm Package, 2.5V,
±50 PPM Stability, -40 to +85°C Temperature Range, at 156.25 MHz
Page
2 of 11
© 2015 FOX ELECTRONICS | ISO9001:2008 Certified
An Integrated Device Technology, Inc. company
FXU-LC52 Series
Electrical Characteristics
Parameters
Frequency Range
Frequency Stability
1
Symbol
F
O
Condition
0.016 MHz to 1.35 GHz
Standard operating
0.016 MHz to 1.35 GHz
Optional operating
0.016 MHz to 1.35 GHz
Storage
Standard
0.016 MHz to 400 MHz
400.000+ MHz to 1.35 GHz
Standard
Maximum Value
(unless otherwise noted)
0.016 MHz to 1.35 GHz
100, 50, 25, 20
2
PPM
-20°C to +70°C
-40°C to +85°C
-55°C to +125°C
2.5 V ± 5%
90 mA
103 mA
100 Ohms Typical
10 mS
100 nS
1
Au
T
O
Temperature Range
T
STG
Supply Voltage
Input Current
(@ Standard Load)
Output Load
Start-Up Time
Output Enable / Disable Time
Moisture Sensitivity Level
Termination Finish
V
DD
I
DD
T
S
MSL
JEDEC J-STD-020
Note 1 – Stability is inclusive of 25°C tolerance, operating temperature range, input voltage change, load change, 1 year aging at 25°C,
shock and vibration.
2 – ±20 PPM stability -20°C to +70°C only.
Absolute Maximum Ratings
(Useful life may be impaired.
Parameters
Input Voltage
Operating Temperature
Storage Temperature
Junction Temperature
ESD Sensitivity
For user guidelines only, not tested)
Symbol
V
DD
T
AMAX
T
STG
HBM
Condition
Maximum Value
(unless otherwise noted)
Human Body Model
–0.5V to +5.0V
–55°C to +85°C
–55°C to +125°C
125°C
1 kV
Page
3 of 11
© 2015 FOX ELECTRONICS | ISO9001:2008 Certified
An Integrated Device Technology, Inc. company
FXU-LC52 Series
Output Wave Characteristics
Parameters
Differential Output Voltage
Output Offset Voltage
Output Symmetry
Output Enable
Note1 (PIN # 1)
Voltage
Output Disable
Note1 (PIN # 1)
Voltage
Cycle Rise Time
Cycle Fall Time
Note1
Symbol
V
OD
V
OS
Condition
0.016 MHz to 1.35 GHz
0.016 MHz to 1.35 GHz
0.016 MHz to 1.35 GHz
50% V
P-P
Maximum Value
(unless otherwise noted)
0.25V to 0.55V
1.0V to 1.375V
45% ~ 55%
≥
70% V
DD
≤
30% V
DD
V
IH
V
IL
T
R
T
F
0.016 MHz to 1.35 GHz
20%~80%V
P-P
0.016 MHz to 1.35 GHz
80%~20%V
P-P
400 pS
400 pS
An optional PIN # 2 as Enable / Disable is available – see Model Selection Guide (page 2)
Page
4 of 11
© 2015 FOX ELECTRONICS | ISO9001:2008 Certified
An Integrated Device Technology, Inc. company
FXU-LC52 Series
Phase Noise (typical measurement at 156.25 MHz)
.
Jitter is frequency dependent. Below are typical measured values for 156.25 MHz.
(Consult Fox Tech Support for other frequencies.)
LVDS Phase Jitter and Time Interval Error (TIE)
Frequency
156.25 MHz
Phase Jitter (pS)
(12kHz to 20MHz)
TIE (pS)
(sigma of jitter distribution
0.365
1.85
Phase Jitter
is integrated from Agilent 5052A Signal Noise Analyzer; measured directly into 50 ohm input; V
DD
= 2.5V.
TIE
was measured on LeCroy LC684 Digital Storage Scope, directly into 50 ohm input, with Amherst M1 software; V
DD
= 2.5V.
Per
MJSQ
spec (Methodologies for Jitter and Signal Quality specifications)
)
LVDS Random & Deterministic Jitter Composition
Frequency
156.25 MHz
Random (Rj)
(pS RMS)
Deterministic (Dj)
(pS P-P)
Total Jitter (Tj)
(pS - (14 x Rj) + Dj)
18
1.0
4.4
Rj and Dj
, measured on LeCroy LC684 Digital Storage Scope, directly into 50 ohm input, with Amherst M1 software.
Per
MJSQ
spec (Methodologies for Jitter and Signal Quality specifications
Page
5 of 11
© 2015 FOX ELECTRONICS | ISO9001:2008 Certified
An Integrated Device Technology, Inc. company
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